JPH11248493A - Instrument illuminator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply a pointer with white light without relying upon a white light diode by arranging a color tone conversion layer composed of a fluorescent substrate for converting blue light from an LED into white light on the optical between the LED and the pointer. SOLUTION: A fluorescent powder emitting light upon excitation with blue light from an LED 6 is mixed, using an acryl based solvent, with a fluorescent substance for converting wavelength principally comprising a powder scattering the exciting light thereof and applied or printed to the light introducing part 24 of the painter 2 thus forming a color tone conversion layer 25. Blue light from the LED 6 is introduced through a light guide 3 to the light transmitting part 11 of an instrument dial 1 which is thereby illuminated transparently with blue color. At the same time, the blue light passes through a facing part 32 to the light introducing part 24 of the pointer 2 where it is converted through the layer 25 into white color and introduced into the pointer 2. Red color is finally emitted from a coloring layer 22 at an indicating section 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for an instrument mounted on a vehicle, for example, and more particularly to an instrument lighting device using a light emitting diode as a light source.

[0002]

2. Description of the Related Art Conventionally, an instrument illuminating device using a light emitting diode as a light source is known, for example, from Japanese Utility Model Laid-Open No. 5-33020 and Japanese Utility Model Laid-Open No. 5-33021. Known are those that illuminate a barrel or an instrument dial.

In this case, the pointer is made of a transparent resin material such as acrylic or polycarbonate, and the instrument dial has a light-transmitting portion capable of transmitting light forming the instrument design portion and a light-shielding property except for the light-transmitting portion. The light from the light-emitting diode, which is composed of a ground portion and is arranged behind the instrument dial, is supplied to the pointer and the light transmitting portion of the instrument dial to emit light.

By the way, among light-emitting diodes, light-emitting diodes that emit red, yellow, and green light have been put into practical use as illumination light sources, and recently, light-emitting diodes that emit blue light have been commercialized. ing.

[0005]

However, some light emitting diodes that emit white light have been commercialized, but the unit price is high compared to other light emitting colors, and it is not practical. In an instrument lighting device using a light emitting diode, it has been difficult to supply white light to a pointer or an instrument dial for illumination. Therefore, for example, it is not possible to obtain a pointer luminescent color of an arbitrary color by providing a colored portion of an arbitrary color for producing a pointer color by a hot stamp or the like and supplying white light to the colored portion. Has a problem in that it is limited to the above four colors including blue.

Further, in the instrument lighting device, for example, the illumination color of the hands is red and the illumination color of the instrument dial (light transmitting portion) is blue. Although there are specifications with different illumination colors, in such a case, if the incandescent bulb is used, the light source itself is white, so the hands are colored red, and the instrument dial (light transmission part) is colored blue. For example, the pointer and the instrument dial (light transmitting portion) can be illuminated with different illumination colors. However, in the case of a light emitting diode, since the light source light cannot be white, a blue light emitting diode is used. There is no problem with the blue illumination of the instrument dial (light transmission part), but even if the hands are colored red, they will be darkened. Therefore, red illumination of the hands is not possible. Red light on the pointer is not a problem, Even if the plate (light transmitting portion) is colored blue, it will be darkened. Therefore, it is difficult to illuminate the pointer and the instrument dial (light transmitting portion) with different colors by using one kind of light emitting diode. There is a problem that is difficult.

[0007] The present invention has been made in view of this point,
It is possible to supply white light to the hands without using a white diode, and it is possible to illuminate the hands and the instrument dial (light transmitting part) with different colors by using one kind of light emitting diode. It is intended to provide an instrument lighting device.

[0008]

According to the present invention, there is provided a light-emitting diode comprising: a light-transmitting pointer; and a light-emitting diode emitting blue light by supplying light to the pointer. A color tone conversion layer made of a phosphor substance for converting blue light of the light emitting diode into white light on an optical path from the light source to the pointer.

According to another aspect of the present invention, there is provided an instrument dial having a light transmitting portion, a light-transmitting pointer rotatably driven on the instrument dial, the pointer and the instrument dial. A light-emitting diode that supplies light and emits light has a blue light-emitting diode, and a color tone conversion layer made of a phosphor substance that converts blue light of the light-emitting diode into white light on an optical path from the light-emitting diode to the pointer. It is characterized by having been provided.

According to another aspect of the present invention, there is provided an instrument dial having a penetrating portion, the instrument dial being rotatably supported on the instrument dial through the penetrating portion of the instrument dial, and having the penetrating portion. A light-transmitting pointer having a light introducing portion on the rotation center side corresponding to the above, and the pointer is arranged behind the instrument dial to supply light to the light introducing portion through the penetrating portion to cause the pointer to emit light. A light-emitting diode emitting blue light; and a color conversion layer made of a phosphor substance for converting blue light from the light-emitting diode into white light is provided on the surface of the light introducing portion of the pointer.

According to another aspect of the present invention, there is provided an instrument dial having a penetrating portion, the instrument dial being rotatably supported on the instrument dial through the penetrating portion of the instrument dial, and having the penetrating portion. , A light-transmitting pointer having a light introducing portion on the rotation center side corresponding to the light-emitting diode, a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial, and a first light-emitting diode opposed to the light-emitting diode. And a second opposing portion opposing the light introducing portion through the opposing portion and the penetrating portion. The light of the light emitting diode introduced through the first opposing portion is transmitted from the second opposing portion to the light introducing portion. A light guide that supplies blue light from the light emitting diode guided through the light guide to the surface of the second opposing portion of the light guide, and converts the blue light into white light. Characterized by having layers To.

According to another aspect of the present invention, there is provided an instrument dial having a penetrating portion and a translucent light transmitting portion, and a pivot on the instrument dial through the penetrating portion of the instrument dial. A light-transmitting pointer that is supported as possible and has a light introducing part on the rotation center side corresponding to the penetrating part, and is arranged behind the pointer and the instrument dial to the light introducing part through the penetrating part. A light emitting diode that supplies light to emit the light and emits light through the light transmitting portion of the instrument dial, and emits blue light from the light emitting diode on the surface of the light introducing portion of the hand. A color conversion layer made of a phosphor substance for converting to white light is provided.

According to another aspect of the present invention, there is provided an instrument dial having a penetrating portion and a translucent light transmitting portion, and a pivot on the instrument dial through the penetrating portion of the instrument dial. A light-transmitting pointer that is supported as possible and has a light introducing part on the rotation center side corresponding to the penetrating part, and a light-emitting diode that emits blue light, which is disposed behind the pointer and the instrument dial, A first facing portion facing the light emitting diode, and a second facing portion facing the light introducing portion through the through portion. The light of the light emitting diode introduced through the first facing portion is transmitted through the second facing portion. A light guide that supplies light from the facing portion to the light introducing portion, and converts the blue light from the light emitting diode guided through the light guide to the surface of the second facing portion of the light guide into white light. Color conversion of phosphor material to be converted The is characterized in that provided.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An instrument lighting device according to the present invention includes a light-transmitting pointer and a blue light emitting diode.
The light emitted from the light emitting diode is supplied to the pointer to cause the pointer to emit light, and a color tone conversion layer made of a phosphor substance that converts blue light of the light emitting diode to white light is provided on the optical path from the light emitting diode to the pointer. Thus, the white light converted by the color tone conversion layer is supplied to the pointer, and the pointer emits light in response to the supplied white light. Therefore, if an arbitrary colored portion for determining the luminescent color is provided on the pointer, the luminescent color of the pointer can be arbitrarily adjusted.

An instrument lighting device according to the present invention includes an instrument dial having a light transmitting portion, a light-transmitting pointer rotatably driven on the instrument dial, and a light emitting diode emitting blue light. Light from the diode is supplied to the pointer and the light transmitting part of the instrument dial to emit light, and on the optical path from the light emitting diode to the pointer, it is made of a phosphor material that converts blue light of the light emitting diode to white light. By providing a color tone conversion layer, white light is supplied to the hands and blue light is supplied to the light transmitting portion of the instrument dial, which allows the hands and the light transmitting portion of the instrument dial to emit light in different colors. it can.

Further, the instrument lighting device according to the present invention comprises an instrument dial having a penetrating portion, and a turn supported rotatably on the instrument dial through the penetrating portion of the instrument dial and corresponding to the penetrating portion. A light-transmitting pointer having a light-introducing portion on the moving center side, and a blue light-emitting diode disposed behind the pointer and the instrument dial; light from the light-emitting diode is introduced through the penetrating portion; The pointer is provided with a color tone conversion layer made of a phosphor substance that converts blue light from a light emitting diode to white light on the surface of the light introduction part of the pointer. The white light converted by the conversion layer is supplied, and the pointer emits light in response to the supplied white light. Therefore, if an arbitrary colored portion for determining the luminescent color is provided on the pointer, the luminescent color of the pointer can be arbitrarily adjusted.

Further, the instrument lighting device according to the present invention has an instrument dial having a penetrating portion, and a turn corresponding to the penetrating portion supported rotatably on the instrument dial through the penetrating portion of the instrument dial. A light-transmitting pointer having a light introduction part on the moving center side, a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial, a first facing part facing the light-emitting diode, and A light guide that has a second facing portion facing the light introducing portion through the penetrating portion and supplies the light of the light emitting diode introduced through the first facing portion to the light introducing portion from the second facing portion. By providing a color tone conversion layer made of a phosphor substance for converting blue light from a light emitting diode guided through the light guide into white light on the surface of the second facing portion of the light guide, Is converted by the color tone conversion layer. White light is supplied, the pointer receives the white light providing emits light. Therefore, if an arbitrary colored portion for determining the luminescent color is provided on the pointer, the luminescent color of the pointer can be arbitrarily adjusted.

An instrument lighting device according to the present invention has an instrument dial having a penetrating portion and a translucent light transmitting portion, and is rotatably supported on the instrument dial through the penetrating portion of the instrument dial. A light-transmitting pointer having a light-introducing portion on the rotation center side corresponding to the penetrating portion, and a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial. Is supplied to the light introducing part through the penetrating part to emit the pointer and to the light transmitting part of the instrument dial to illuminate the light transmitting part.The light emitting diode is provided on the surface of the light introducing part of the pointer. By providing a color tone conversion layer made of a phosphor substance that converts blue light from white light into white light, white light is supplied to the hands, and blue light is supplied to the light transmitting part of the instrument dial, thereby The light transmission part of the instrument dial is emitted in a different color It can be.

An instrument lighting device according to the present invention has an instrument dial having a penetrating portion and a translucent light transmitting portion, and is rotatably supported on the instrument dial via the penetrating portion of the instrument dial. A light-transmitting pointer having a light introduction part on the rotation center side corresponding to the penetrating part, and a light-emitting diode of blue color disposed behind the pointer and the instrument dial,
The light emitting device has a first facing portion facing the light emitting diode and a second facing portion facing the light introducing portion through the penetrating portion. Light of the light emitting diode introduced through the first facing portion is introduced from the second facing portion. A light guide for supplying blue light to the light guide, and a color conversion layer made of a phosphor substance for converting blue light from the light emitting diode guided through the light guide to the surface of the second facing portion of the light guide to white light. Is provided, white light is supplied to the hands, and blue light is supplied to the light transmitting portion of the instrument dial, whereby the hands and the light transmitting portions of the instrument dial can be emitted in different colors.

[0020]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a first embodiment of the present invention.

In FIG. 1, the instrument illuminating device comprises an instrument dial 1, a pointer 2 arranged on the instrument dial 1, a light guide 3 arranged behind the instrument dial 1, and a light guide. Body 3
, A circuit board 5 on which the meter 4 is disposed, and a light emitting diode 6 disposed on the circuit board 5.

The instrument dial 1 is a so-called transmissive dial, and includes a translucent light transmitting portion 11 for forming a predetermined lighting design such as scales, characters, numerals, marks, and the like, and a light transmitting portion 11. And a light-shielding ground portion 12 serving as a background, and has a slightly larger opening diameter at a predetermined position on the center side thereof in accordance with a rotation locus of a later-described reflecting portion and a light introducing portion of the pointer 2. A through portion 13 is formed.

The pointer 2 is made of a translucent resin material such as acrylic or polycarbonate, extends linearly and has a light emitting surface on the front side thereof, and a hot stamp or the like on the back of the pointer 21. For example, a red colored layer 22 applied by the means described above, a reflecting portion 23 formed in front of the rotation center side continuous from the indicating portion 21 and reflecting light incident on this portion to the front end side, This reflection part 23
A light introducing portion 24 formed behind the rotation center side facing the light introducing portion 24 for introducing the light of the light emitting diode 6, and a color tone conversion layer formed on the surface behind the light introducing portion 24 and described in detail later. 25.

The light guide 3 is also made of a translucent resin material such as acryl or polycarbonate, and has a first facing portion 31 located at one end thereof facing the light emitting diode 6 and an instrument located at the other end. Hand 2 through penetrating portion 13 of dial 1
And a through-hole 33 formed to correspond to the penetrating part of the instrument dial 1, and light emitted inside through the first opposing part 31. The light from the diode 6 is supplied from the second facing portion 32 to the light introducing portion 24 of the pointer 2.

The instrument 4 has a pointer shaft 41 that rotates around an axis in response to an input signal guided through the circuit board 5. The pointer shaft 41 is connected to the through hole 33 of the light guide 3 and the instrument dial 1. Extends through the penetrating portion 13 of the pointer 2 side, and the extension 2
Are connected and fixed.

The circuit board 5 is formed of a so-called rigid (hard) circuit board, and a circuit pattern (not shown) for conducting the meter 4 and the light emitting diode 6 is formed on the board surface.

The light-emitting diode 6 is of a so-called chip type. In this embodiment, a light-emitting diode (product number NDCB1) that emits blue light manufactured by Nichia Corporation
00) is used.

The blue light from the light emitting diode 6 is supplied to the light transmitting portion 11 of the instrument dial 1 through the light guide 3, and this portion is transmitted and illuminated in blue. The blue light introduced into the light guide 3 is supplied to the light introducing portion 13 of the pointer 2 through the second facing portion 32, and the light introducing portion 13 has a color tone conversion layer 25 formed therein, and emits light. The blue light from the diode 6 is converted into white light by passing through the color tone conversion layer 25, so that white light is introduced into the hands 2 and
This white light is colored red through the coloring layer 22 of the indicator 21, and this red light becomes the emission color of the pointer 2.

Here, the color tone conversion layer 25 is formed by applying a wavelength-converting phosphor substance mainly composed of a phosphor powder that emits and emits light by blue light of the light emitting diode 6 and a powder that scatters the excitation light through an acrylic solvent. Such a phosphor substance (powder) is mixed and applied or printed on the light introducing section 13 and such a phosphor substance (powder) is described in detail in, for example, JP-A-7-176794.

As described above, the present embodiment is provided with the light-transmitting hands 2 and the light-emitting diodes 6 which emit blue light by supplying light to the hands 2.
The color tone conversion layer 25 made of a phosphor substance for converting the blue light of the light emitting diode 6 into white light is provided on the optical path from
Instrument dial 1 having the following, and penetrating portion 1 of this instrument dial 1
A light-transmitting hand 2 which is rotatably supported on the instrument dial 1 via the center 3 and has a light introducing portion 24 at the center of rotation corresponding to the penetrating portion 13; 1 and a light introducing section 24 through the through section 13.
And a light emitting diode 6 that emits light to emit the hands 2 and emits blue light. By providing the color tone conversion layer 25, the hands 2 are supplied with white light whose wavelength (color tone) has been converted by the color tone conversion layer 25, and the hands 2 emit light in response to the white light supply. Therefore, when an arbitrary colored portion for determining the emission color is not provided in the pointer 2, the pointer 2 emits white light, and the colored portion 22 can be made to emit red light by making the colored portion 22 red as in this embodiment. Thus, the emission color of the pointer 2 can be arbitrarily adjusted.

Further, in this embodiment, the instrument dial 1 having the light transmitting portion 11, the translucent hands 1 pivotally driven on the instrument dial 1, the hands 2 and the instrument dial 1 are provided. Light-emitting diode 6 that emits light by emitting light and emits blue light
And a color tone conversion layer made of a phosphor substance for converting blue light of the light emitting diode 6 to white light is provided on the optical path from the light emitting diode 6 to the pointer. Instrument dial 1 having a light-transmitting portion 11 and a light-transmitting portion 11;
A light-transmitting hand 2 which is rotatably supported on the instrument dial 1 and has a light introducing portion 24 at the center of rotation corresponding to the penetrating portion 13; A light-emitting diode, which is arranged behind the light-emitting diode 24 and supplies light to the light introducing unit 24 through the penetrating part 13 to emit light of the hands 2 and illuminates the light transmitting part 11 of the instrument dial 1 with a blue color. Is provided with a color tone conversion layer 25 made of a phosphor substance for converting blue light from a light emitting diode into white light on the surface of the light introducing portion 24, so that the white light by the color tone conversion layer 25 is displayed on the hands 2 and the instrument. The light transmitting portion 11 of the dial 1 is supplied with blue light, so that the hands 2 and the light transmitting portion 11 of the instrument dial 1 have different colors (in this embodiment, the hands 2 are red and the light transmitting portions 11 are blue). ).

FIG. 3 is a cross-sectional view showing a second embodiment of the present invention. In this embodiment, the color tone conversion layer 25 is provided with a second opposing light guide 3 opposing the light introducing portion 24 of the pointer 2. The portion 32 is provided on the surface of the second facing portion 32 facing the light introducing portion 24. In the case where the color conversion layer 25 is provided on the light guide 3, it may be provided in accordance with the rotation trajectory of the light introducing portion 24 of the pointer 2.

As described above, according to this embodiment, the instrument dial 1 having the penetrating portion 13 and the instrument dial 1 is rotatably supported on the instrument dial 1 through the penetrating portion 13 of the instrument dial 1. And a light introducing portion 24 at the rotation center side corresponding to the through portion 13.
A light-transmitting pointer 2 having a light-emitting diode, a light-emitting diode 6 having a blue emission color disposed behind the pointer 2 and the instrument dial 1, a first facing portion 31 facing the light-emitting diode 6, and a through-hole. A light guide for supplying light from the light-emitting diode 6 introduced through the first opposing portion 31 to the light introducing portion 24 from the second opposing portion 32, having a second opposing portion 32 opposing the light introducing portion 24 through the portion 13; And a color conversion layer made of a fluorescent substance that converts blue light from the light emitting diode 6 guided through the light guide 3 to the surface of the second facing portion 32 of the light guide 3 into white light. With the provision of 25, the same effects as in the first embodiment can be obtained.

Further, according to this embodiment, the instrument dial 1 having the penetrating portion 13 and the light transmitting portion 11 and the instrument dial 1 through the penetrating portion 13 of the instrument dial 1. The light-transmitting hands 2 which are rotatably supported and have a light introducing portion 24 at the center of rotation corresponding to the penetrating portion 13, and the emission colors arranged behind these hands 2 and the instrument dial 1 are A first opposing portion having a blue light emitting diode, a first opposing portion facing the light emitting diode, and a second opposing portion facing the light introducing portion through the through portion;
And a light guide 3 for supplying light from the light emitting diode 6 introduced through the light guide 2 to the light introducing unit 24 from the second facing unit 32.
By providing a color tone conversion layer 25 made of a fluorescent substance for converting blue light from the light emitting diode 6 guided through the light guide 3 into white light on the surface of the second facing portion 32 of the light guide 3. The same effects as those of the first embodiment can be obtained.

In the first and second embodiments, the case where the color tone conversion layer 25 is provided on the light introducing portion 24 of the pointer 2 and the case where the color tone converting layer 25 is provided on the first facing portion 32 of the light guide 3 are shown. However, if the color tone conversion layer 25 is provided on the optical path from the light emitting diode 6 to the pointer 2, the through hole 13 of the instrument dial 1
It is also possible to make the portion a transparent portion instead of a through hole, and to provide the color tone conversion layer 25 in this transparent portion.

[0037]

As described above, the present invention comprises a light-transmitting pointer and a light-emitting diode that emits light by supplying light to the pointer and emits blue light. By providing a color tone conversion layer made of a phosphor substance for converting blue light of the light emitting diode into white light on the optical path, it is possible to provide a pointer lighting device capable of supplying white light to the hands.

According to the present invention, there is provided an instrument dial having a light transmitting portion, a translucent pointer which is rotatably driven on the instrument dial, and supplying light to the pointer and the instrument dial to emit light. A light-emitting diode that emits blue light, and a color tone conversion layer made of a phosphor substance that converts blue light of the light-emitting diode into white light on an optical path from the light-emitting diode to the pointer. It is possible to provide a pointer illuminating device capable of illuminating the instrument and the instrument dial with different colors.

The present invention also provides an instrument dial having a penetrating portion, and a pivot center supported on the instrument dial through the penetrating portion of the instrument dial so as to be rotatable and corresponding to the penetrating portion. A light-transmissive pointer having a light-introducing portion on the side thereof, and a light-emitting color which is arranged behind the pointer and the instrument dial and supplies light to the light-introducing portion through the penetrating portion to cause the pointer to emit blue light. A diode and a color tone conversion layer made of a phosphor substance for converting blue light from the light emitting diode into white light on the surface of the light introducing portion of the pointer, so that the pointer can be supplied with white light. A possible pointer lighting device can be provided.

The present invention also provides an instrument dial having a penetrating portion, and a pivot center supported on the instrument dial via the penetrating portion of the instrument dial so as to be rotatable and corresponding to the penetrating portion. A light-transmitting pointer having a light-introducing portion on the side, a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial, a first facing portion facing the light-emitting diode, and the through hole. A light guide that has a second facing portion facing the light introducing portion through the portion and supplies the light of the light emitting diode introduced through the first facing portion from the second facing portion to the light introducing portion; And a color tone conversion layer made of a fluorescent substance that converts blue light from the light emitting diode guided through the light guide into white light on the surface of the second facing portion of the light guide. Supplies white light to the pointer Possible to provide a pointer illuminating apparatus capable.

According to the present invention, there is provided an instrument dial having a penetrating portion and a translucent light transmitting portion, and a rotatable support on the instrument dial via the penetrating portion of the instrument dial. A light-transmitting pointer having a light-introducing portion on the rotation center side corresponding to the penetrating portion, and the pointer and the pointer disposed behind the instrument dial to supply light to the light-introducing portion through the penetrating portion, A light emitting diode for emitting blue light and for illuminating the light transmitting portion of the instrument dial with a blue light emitting color, and a fluorescent light for converting blue light from the light emitting diode to white light on the surface of the light introducing portion of the pointer By providing the color tone conversion layer made of a body substance, it is possible to provide a pointer illuminating device capable of illuminating the hands and the instrument dial with different colors.

Further, according to the present invention, there is provided an instrument dial having a penetrating portion and a translucent light transmitting portion, and the instrument dial being rotatably supported on the instrument dial via the penetrating portion of the instrument dial. A light-transmitting pointer having a light-introducing portion on the rotation center side corresponding to the penetrating portion, a light-emitting diode arranged in blue behind the pointer and the instrument dial, and a light-emitting diode facing the light-emitting diode A light-emitting diode, which is introduced through the first opposing portion, through the first opposing portion and the light-introducing portion through the penetrating portion. A light guide that supplies blue light from the light emitting diode guided to the surface of the second facing portion of the light guide through the light guide into white light. By providing a different color tone conversion layer, A needle and instrument dial can provide a pointer illuminating apparatus capable of different color lighting.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

[Explanation of Symbols] 1 instrument dial 2 pointer 3 light guide 6 light emitting diode 11 transmissive part 13 penetrating part 24 light introducing part 25 color tone conversion layer 31 first opposing part 32 second opposing part

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[Procedure amendment]

[Submission date] February 27, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (6)

[Claims] 1. A light-transmitting pointer, and a light-emitting diode that emits light by supplying light to the pointer and emits blue light,
An instrument illuminating device (only a pointer-basic 1) provided on a light path from the light emitting diode to the pointer, a color tone conversion layer made of a phosphor substance for converting blue light of the light emitting diode into white light. 2. An instrument dial having a light transmitting portion, a translucent hand pivotally driven on the instrument dial, a light emitting color for supplying light to the hand and the instrument dial to emit light. And a blue light emitting diode, and a color tone conversion layer made of a phosphor substance for converting blue light of the light emitting diode to white light is provided on an optical path from the light emitting diode to the pointer. Device (pointer + dial-
Basic 2). 3. An instrument dial having a penetrating portion, and an instrument dial supported rotatably on the instrument dial through the penetrating portion of the instrument dial and having a light on a rotation center side corresponding to the penetrating portion. A light-transmitting pointer having an introduction portion, and a light-emitting diode that is arranged behind the pointer and the instrument dial to supply light to the light introduction portion through the penetrating portion and emit light from the pointer to emit blue light. And a color tone conversion layer made of a phosphor substance for converting blue light from the light emitting diode into white light on the surface of the light introducing portion of the pointer. ). 4. An instrument dial having a penetrating portion, and a light pivotally supported on the instrument dial through said penetrating portion of said instrument dial and pivotally directed toward a rotation center corresponding to said penetrating portion. A light-transmitting pointer having an introduction portion, a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial, a first facing portion facing the light-emitting diode, and the penetrating portion. The second facing the light introducing section
And a light guide that supplies the light of the light-emitting diode introduced through the first opposed portion to the light introducing portion from the second opposed portion, and a second light guide of the light guide. An instrument illuminating device (guided in Basic 1) characterized in that a color conversion layer made of a phosphor substance for converting blue light from the light emitting diode guided through the light guide into white light is provided on the surface of the facing portion. Light body). 5. An instrument dial having a penetrating portion and a translucent light transmitting portion, and said penetrating portion being rotatably supported on the instrument dial via said penetrating portion of said instrument dial. A light-transmitting pointer having a light introducing portion on the rotation center side corresponding to the above, and the pointer is arranged behind the instrument dial to supply light to the light introducing portion through the penetrating portion to cause the pointer to emit light. A light emitting diode that transmits and illuminates the light transmitting portion of the instrument dial with a blue light emitting diode, and a phosphor material that converts blue light from the light emitting diode to white light on the surface of the light introducing portion of the pointer. An instrument lighting device provided with a color tone conversion layer (formed as a pointer in Basic 2). 6. An instrument dial having a penetrating portion and a translucent light transmitting portion, and a rotatable support on the instrument dial via said penetrating portion of said instrument dial and said penetrating portion. , A light-transmitting pointer having a light introducing portion on the rotation center side corresponding to the light-emitting diode, a light-emitting diode having a blue emission color disposed behind the pointer and the instrument dial, and a first light-emitting diode opposed to the light-emitting diode. And a second opposing portion opposing the light introducing portion through the opposing portion and the penetrating portion. The light of the light emitting diode introduced through the first opposing portion is transmitted to the second opposing portion through the second opposing portion.
A light guide that supplies the light introducing section from the facing section of
A color conversion layer made of a fluorescent substance that converts blue light from the light emitting diode guided through the light guide into white light is provided on the surface of the second facing portion of the light guide. Instrument lighting device (formed on light guide in Basic 2).